package com.frx.common.map;


import java.util.HashMap;

/**
 * @author ：frx
 * @date ：Created in 2019/11/19 22:26
 * @description：ToDO
 * @modified By：
 * @version: ToDO
 */
public class TestHashMap2 {
    public static void main(String[] args){
        int cap = 15;
        int n = cap -1;
        n|= n>>>1;
        System.out.println((n));
        n|= n>>>2;
        System.out.println((n));
        n|= n>>>4;
        System.out.println((n));
        n|= n>>>8;
        System.out.println((n));
        n|= n>>>16;
        System.out.println((n));
        HashMap<String,String> map = new HashMap(1);
        map.put("a","a");
    }

}
